Hey. According to https://www.garmin.com/en-US/garmin-technology/health-science/fitness-age/ Garmin watches (Connect app) should show you your current fitness age as well as 'achievable fitness age'.
I have a Fenix 7 Solar model and everything works as expected (dark image). However, my friend has Venu 3S and doesn't see the 'achievable fitness age' inside the application (light image).
Could there be any reason why? Is there a way to fix it?